A close call at the sea

Two summers ago my family and I went to the beach for swimming. It was a hot day and the sun was burning. As soon as we arrived we took off our clothes and jumped into the sea. My sister stayed behind to put on her arm breams. Of course my mum went to help her. We were all laughing and enjoying ourselves.
We had been swimming and playing for a long time so we decided to get out of the sea. Suddenly my sister who had already taken off her sea breams, lost her balance and fell into the sea with her face down. When we look back to check her she was trying to take a breath. Immediately my dad dived into the sea and saved her. It took her a while to feel better. We were all relieved and we realized that it only takes a moment for the worst to happen!